Question

Minta tolong dengan caranya

Answer 1

Verified answer

Fungsi invers

f(x)= x² + 2x - 3
x² + 2x = f(x)  + 3
x²+ 2x = f(x) + 3
(x+1)² = f(x) + 3+ 1
(x+1)² = f(x)  + 4
x + 1 = +- √{ f(x) + 4}
x =  - 1 +- √{4+ y}